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 2007 Semtech Corp.

www.semtech.com

SC2603A

POWER MANAGEMENT

Applications Information (Cont.)

Layout diagram for the SC2603A

Figure 4: SC2603A Layout Diagram

Note: Heavy lines indicate the critical loop carrying high pulsating current.

The inductance of the loop needs to be minimized.

Vout

12VIN

+

Cout

2.2

0.1uF

Q1

0.1uF

D1

SC2603A

GND

1

VIN

5

3

CS

6

GATE

2

FB

4

Rb

Ra

Rs

EN/SS

L1

Cin